高氮废水生物脱氮的碱度平衡计算案例

Calculation of Alkalinity Balance in Biological Denitrification of High Nitrogen Wastewater

高氮废水生物脱氮过程中的碱度消耗会影响微生物的生存环境,导致废水处理效率降低。文中以某工业园区废水处理工程为例,分析废水生物脱氮过程的碱度变化,计算得到系统需补充的碱度投加量为768 mg/L,需要的30%氢氧化钠原液为77 m^3/d,原液储存池有效容积为550 m^3,共配置3台加药泵,2用1备,每台泵流量为5.8 m^3/h。同时,推荐了加药泵设备选型,为同类废水处理工程案例设计提供了重要参考。

The consumption of alkalinity in the process of biological denitrification of high nitrogen wastewater will affect the living environment of microorganisms and lead to the decrease of wastewater treatment efficiency.Take the industrial wastewater treatment project as an example,the change of alkalinity in the process of biological nitrogen removal of wastewater is analyzed.It is calculated that the alkalinity dosage to is 768 mg/L,the required 30%sodium hydroxide liquid is 77 m^3/d,and the effective volume of the liquid storage pool is 550 m^3.Three dosing pumps are equipped,two of them are in use and one standby,and the flow rate of each pump is 5.8m^3/h.At the same time,the selection of dosing pump equipment is recommended,providing references for the design of similar waste water treatment projects.